Mustache html how to import?

I have to use Mustache , I created a template like 


 var Template = ""+
                        "<li>"+
                        "<p><strong>Name:</strong>{{name}}</p>"+
                        "<p><strong>Last_name:</strong>{{last_name}}</p>"+
                        "<p><strong>phone:</strong>{{phone}}</p>"+
                        "<button data-id='{{id}}' class ='remove'>X</button>"+
                        "</li>";

but when I tried to use it  like:

  $orders.append(Mustache.render(Template,order));

from another method doent work, my question is what exactly I should do to import Mustache. Please respond in details. Everything happens in ajax function